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How Things Work — Chapter Summary

CBSE · Class 4 · EVS

Summary of How Things Work for CBSE Class 4 EVS. Key concepts: Some objects like coins, A spinner with a hole at and A charkha has a large wheel.

44 questions64 flashcards5 concepts

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Overview

Things around us move in different ways. Some objects spin, some float, and some sink. A spinner may slow down and shake before stopping. A paper boat may float properly or flip over. The shape of an object can change what it does in water. These ideas help explain how simple things work in daily li

Key Concepts

Some objects like coins and bangles

Some objects like coins and bangles spin, while erasers do not spin properly. Many things around us spin, such as ceiling fans and potter's wheels.

A spinner with a hole at

A spinner with a hole at the centre appears the same from all sides and remains upright while spinning.

A charkha has a large wheel

A charkha has a large wheel that spins when turned by hand and is used to twist cotton fibre into thread. Mahatma Gandhi used the charkha to make hand

Spinning tops have been used

Spinning tops have been used in India for thousands of years, and clay was used earlier to make them. Lattu is a popular Indian top commonly made of w

Floating or sinking cannot be decided

Floating or sinking cannot be decided only by whether an object is heavy or light. It depends on other factors too. A leaf floats, while an iron nail

Learning Objectives

  • To recognise objects that spin and objects that do not spin properly
  • To understand why some spinners stay upright and others do not
  • To identify common spinning things such as ceiling fans, potter's wheels, charkha, and lattu
  • To observe how objects float or sink in water
  • To learn that floating and sinking depend on more than just weight

Frequently Asked Questions

What are the important topics in How Things Work for CBSE Class 4 EVS?
Key topics in How Things Work include Spinning Things, Floating and Sinking, Making and Improving Boats, Observing and Thinking. Study these first, then practise questions on each for Class 4 exams.
How should I revise How Things Work for Class 4 exams?
Learn the core ideas first, then work through the 44 practice questions on How Things Work. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for How Things Work

All CBSE Class 4 EVS Chapter Summary

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